Microphone array for sound pickup in teleconference systems
Fadi Khalil, Jean-Pascal Jullien, André Gilloire · Journal of the Audio Engineering Society · 1994
The theory and the design of a logarithmically spaced microphone array with a spatial filtering capability are presented. The spatial filtering reduces the effects of reverberation and interfering noise sources that degrade the quality of sound pickup in teleconference systems. This feature is a result of the array's ability to discriminate against sound arrivals from all directions except that of the desired source